mirror of
https://github.com/apple/swift.git
synced 2025-12-21 12:14:44 +01:00
793b3326af
The rule changes are as follows: * All functions (introduced with the 'func' keyword) have argument labels for arguments beyond the first, by default. Methods are no longer special in this regard. * The presence of a default argument no longer implies an argument label. The actual changes to the parser and printer are fairly simple; the rest of the noise is updating the standard library, overlays, tests, etc. With the standard library, this change is intended to be API neutral: I've added/removed #'s and _'s as appropriate to keep the user interface the same. If we want to separately consider using argument labels for more free functions now that the defaults in the language have shifted, we can tackle that separately. Fixes rdar://problem/17218256. Swift SVN r27704
42 lines
698 B
Swift
42 lines
698 B
Swift
// RUN: %target-parse-verify-swift
|
|
|
|
class A { }
|
|
class B : A { }
|
|
class C : B { }
|
|
class D : B { }
|
|
|
|
class E<T> : D { }
|
|
class F<T> : E<[T]> { }
|
|
|
|
var a : A
|
|
var b : B
|
|
var c : C
|
|
var d : D
|
|
var ef : E<Float>
|
|
var fi : F<Int>
|
|
|
|
func f0(b : B) {}
|
|
|
|
func ternary<T>(cond: Bool,
|
|
@autoclosure _ ifTrue: () -> T,
|
|
@autoclosure _ ifFalse: () -> T) -> T {}
|
|
|
|
f0(c)
|
|
f0(a) // expected-error{{cannot invoke 'f0' with an argument list of type '(A)'}} expected-note {{expected an argument list of type '(B)'}}
|
|
f0(ef)
|
|
f0(fi)
|
|
|
|
// FIXME: Test subtyping of class metatypes.
|
|
|
|
ternary(true, ef, c)
|
|
|
|
|
|
class X {
|
|
init() {}
|
|
init(x:Int, y:UnicodeScalar) {}
|
|
}
|
|
|
|
var x0 = X()
|
|
var x1 = X(x: 1, y: "2")
|
|
|